Dtc C1A01 Driving Support Ecu

Engine Hybrid System. Land Cruiser. Urj200, 202 Grj200 Vdj200
Cruise Control. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

INSPECTION PROCEDURE

CHECK FOR DTCs (RADAR CRUISE2)

DTC C1A01 Driving Support ECU


DESCRIPTION

This DTC indicates an internal malfunction of the driving support ECU assembly.

DTC No.
DTC Detection Condition
Trouble Area
C1A01
When the engine switch is on (IG) and the dynamic radar cruise control system is operating, the driving support ECU assembly detects an internal malfunction for approximately 1 second.
Driving support ECU assembly

INSPECTION PROCEDURE

NOTICE:
When replacing the driving support ECU assembly, always replace it with a new one. If a driving support ECU assembly which was installed to another vehicle is used, the information stored in the driving support ECU assembly will not match the information from the vehicle. As a result, a DTC may be stored.
1.CHECK FOR DTCs (RADAR CRUISE2)

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG).

  1. Clear the DTCs (Click here).

  1. Make sure that the DTC detection conditions are met.

    HINT:
    If the detection conditions are not met, the system cannot detect the malfunction.
    1. Turn the engine switch on (IG).
    2. Turn the dynamic radar cruise control system on using the cruise control main switch (ON/OFF).
    3. Wait for 1 second or more.

  1. Enter the following menus: Powertrain / Radar Cruise2 / Trouble Codes.

  1. Check for DTCs (Click here).

    Result:
    Result
    		Proceed to
    DTC C1A01 is not output
    		A
    DTC C1A01 is output
    		B


B
REPLACE DRIVING SUPPORT ECU ASSEMBLY (Click here)
A

USE SIMULATION METHOD TO CHECK (Click here)